# Visible cell selection - HardwareSelector.py example is not working reliably

**URL:** https://discourse.vtk.org/t/visible-cell-selection-hardwareselector-py-example-is-not-working-reliably/1262
**Category:** Support
**Created:** [July 3, 2019, 3:01pm UTC](https://discourse.vtk.org/t/visible-cell-selection-hardwareselector-py-example-is-not-working-reliably/1262 "2019-07-03T15:01:47Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![banesullivan](https://discourse.vtk.org/user_avatar/discourse.vtk.org/banesullivan/32/7143_2.png) [@banesullivan](https://discourse.vtk.org/u/banesullivan)
#### Post date: [July 3, 2019, 4:08pm UTC](https://discourse.vtk.org/t/visible-cell-selection-hardwareselector-py-example-is-not-working-reliably/1262/3 "2019-07-03T16:08:49Z")

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Just an FYI, my comments in [Opacity issue with point picking on surface](https://discourse.vtk.org/t/opacity-issue-with-point-picking-on-surface/1193/7) about random section issues were stemming from some problems I’ve been having with implementing [this PyVista PR](https://github.com/pyvista/pyvista/pull/281) for [this original feature request](https://github.com/pyvista/pyvista/issues/277) from @S0Phon

I’m also having trouble using the hardware selector - My GPU is a _Radeon Pro Vega 20 4 GB_

![com-video-to-gif-6](https://discourse.vtk.org/uploads/default/original/1X/5e969f0676c8cc395ca74a79cb1e3318d4cef8c0.gif)

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